US9837063B1 - Pickup coil sensors and methods for adjusting frequency response characteristics of pickup coil sensors - Google Patents
Pickup coil sensors and methods for adjusting frequency response characteristics of pickup coil sensors Download PDFInfo
- Publication number
- US9837063B1 US9837063B1 US15/002,400 US201615002400A US9837063B1 US 9837063 B1 US9837063 B1 US 9837063B1 US 201615002400 A US201615002400 A US 201615002400A US 9837063 B1 US9837063 B1 US 9837063B1
- Authority
- US
- United States
- Prior art keywords
- windings
- sensor
- primary
- region
- winding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H3/00—Instruments in which the tones are generated by electromechanical means
- G10H3/12—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument
- G10H3/14—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means
- G10H3/18—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means using a string, e.g. electric guitar
- G10H3/181—Details of pick-up assemblies
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H3/00—Instruments in which the tones are generated by electromechanical means
- G10H3/12—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument
- G10H3/22—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using electromechanically actuated vibrators with pick-up means
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H2220/00—Input/output interfacing specifically adapted for electrophonic musical tools or instruments
- G10H2220/461—Transducers, i.e. details, positioning or use of assemblies to detect and convert mechanical vibrations or mechanical strains into an electrical signal, e.g. audio, trigger or control signal
- G10H2220/505—Dual coil electrodynamic string transducer, e.g. for humbucking, to cancel out parasitic magnetic fields
- G10H2220/515—Staggered, i.e. two coils side by side
Definitions
- the frequency response of a pickup coil sensor in an electromagnetic pickup is an important determinant of the timbre of amplified sound transferred from vibrating ferromagnetic strings.
- the resonance frequency is largely a function of the internal resistance, inductance, and self-capacitance of the coil. These properties depend upon the geometry of the coil, the number and density of turns in the winding, and gauge of wire.
- electromagnetic pickups for stringed musical instruments have comprised one or more coils, each of which is wound with a single strand of wire (referred to as a single-winding coil).
- the resonance frequency of an electromagnetic guitar pickup typically lies within the range of 4,000 to greater than 20,000 Hertz.
- the fundamental frequencies of notes on the guitar fret board range from ⁇ 80 Hertz (open sixth string E) to ⁇ 1318 Hertz (first string E at the 24 th fret), and the frequencies of the corresponding musically important overtones are mostly less than 4,000 Hertz.
- Electromagnetic pickups referred to commonly as ‘single coil’ as disclosed in U.S. Pat. No. 2,087,106 (HART) Jun. 13, 1937 and U.S. Pat. No. 2,089,171 (BEAUCHAMP) Aug. 10, 1937 comprise a single-winding coil (as shown schematically in FIG. 1 and depicted in cross-sectional views in FIG. 10A-10B ) in which the winding is disposed about one or more ferromagnetic or permanent magnet pole pieces.
- Electromagnetic pickups comprising two or more coils (as disclosed in U.S. Pat. No. 2,892,371 (BUTTS) Jun. 30, 1959 and U.S. Pat. No. 2,896,491 (LOVER) Jul.
- two-coil electromagnetic pickups comprise several single-winding coils that are stacked one atop another (as disclosed in U.S. Pat. No. 3,657,461 (FREEMAN) Apr. 18, 1972) or nested within each other (as disclosed in U.S. Pat. No. 3,711,619 (JONES) Jan. 16, 1973).
- Present embodiments provide for the construction of pickup coil sensors comprising a plurality of concurrently wound and fully or partially interpenetrating windings for which the resonance frequency can be varied over a broad range and can be adjusted to emphasize certain frequency regimes.
- FIG. 17 1701 with ⁇ 2,500 turns of 42 AWG wire (resonance frequency at ⁇ 17,804 Hertz) and 1702 with ⁇ 5,000 turns of 42 AWG wire (resonance frequency at ⁇ 9,907 Hertz) are also shown in FIG. 17 .
- a pickup coil sensor with concurrently wound and interpenetrating windings can be combined with another such pickup coil sensor or with a single-winding pickup coil sensor to form a two-coil combination with a distinct frequency response profile.
- FIG. 18 the frequency response profile for this type of two-coil combination 1803 is shown in which a pickup coil sensor (as shown schematically in FIG. 2 and depicted in cross-sectional views in FIG.
- FIG. 11A-11B comprising primary and secondary windings each of ⁇ 2,500 turns of 42 AWG wire and in which said windings are connected in series is in turn connected in series with a single-winding pickup coil sensor (as shown schematically in FIG. 1 and depicted in cross-sectional views in FIG. 10A-10B ) with ⁇ 5,000 turns of 42 AWG wire.
- the frequency response profiles for the single-winding pickup coil sensor 1801 and the two wire concurrently wound and interpenetrating pickup coil sensor 1802 comprised by the two-coil combination are also shown in FIG. 18 .
- FIG. 1 is a schematic diagram of a single-winding pickup coil sensor comprising a core 101 and a winding 102 .
- FIG. 2 is a schematic diagram of a pickup coil sensor comprising a core 101 , a primary winding 202 , and a secondary winding 203 in which the primary and secondary windings are concurrently wound and fully interpenetrating.
- FIG. 3 is a schematic diagram of a pickup coil sensor comprising a core 101 , a primary winding 302 , and a secondary winding 303 in which the primary and secondary windings are concurrently wound and partially interpenetrating and in which the region of interpenetration begins at the start of the windings and ends in the midst of the primary winding 302 .
- FIG. 4 is a schematic diagram of a pickup coil sensor comprising a core 101 , a primary winding 402 , and a secondary winding 403 in which the primary and secondary windings are concurrently wound and partially interpenetrating and in which the region of interpenetration begins in the midst of the primary winding 402 and continues to the end of the windings.
- FIG. 5 is a schematic diagram of a pickup coil sensor comprising a core 101 , a primary winding 502 , and a secondary winding 503 in which the primary and secondary windings are concurrently wound and partially interpenetrating and in which the region of interpenetration begins and ends in the midst of the primary winding 502 .
- FIG. 6 is a schematic diagram of a pickup coil sensor comprising a core 101 , a primary winding 602 , and a secondary winding 603 in which the primary and secondary windings are concurrently wound and partially interpenetrating and in which the region of interpenetration begins in the midst of the primary winding 602 and ends in the midst of the secondary winding 603 .
- FIG. 7 is a perspective view of a general form of a pickup coil bobbin 106 comprising a core 101 , an upper flange 104 and a lower flange 105 .
- a partial winding 102 is depicted, with arrows 103 showing the counter-clockwise direction of winding when viewed from the top. Clockwise winding is also equally applicable to pickup coil sensors.
- FIG. 8 is a perspective view of a general form of a pickup coil sensor comprising a bobbin 106 and a coil 107 .
- FIG. 9 shows the depiction used for the primary winding 901 , the depiction used for the secondary winding 902 , and the depiction used for the region of interpenetration of the primary and secondary windings 903 that are used in FIGS. 10-15 .
- FIG. 10A is a cross-sectional view of a single-winding pickup coil sensor as depicted in FIG. 1 taken along the section 1 - 1 of FIG. 8 .
- FIG. 9 for conventions regarding the depiction of the windings.
- FIG. 10B is a cross-sectional view of a single-winding pickup coil sensor as depicted in FIG. 1 taken along the section 2 - 2 of FIG. 8 .
- FIG. 9 for conventions regarding the depiction of the windings.
- FIG. 11A is a cross-sectional view of a two-winding pickup coil sensor as depicted in FIG. 2 taken along the section 1 - 1 of FIG. 8 .
- FIG. 9 for conventions regarding the depiction of the windings.
- FIG. 11B is a cross-sectional view of a two-winding pickup coil sensor as depicted in FIG. 2 taken along the section 2 - 2 of FIG. 8 .
- FIG. 9 for conventions regarding the depiction of the windings.
- FIG. 12A is a cross-sectional view of a two-winding pickup coil sensor as depicted in FIG. 3 taken along the section 1 - 1 of FIG. 8 .
- FIG. 9 for conventions regarding the depiction of the windings.
- FIG. 12B is a cross-sectional view of a two-winding pickup coil sensor as depicted in FIG. 3 taken along the section 2 - 2 of FIG. 8 .
- FIG. 9 for conventions regarding the depiction of the windings.
- FIG. 13A is a cross-sectional view of a two-winding pickup coil sensor as depicted in FIG. 4 taken along the section 1 - 1 of FIG. 8 .
- FIG. 9 for conventions regarding the depiction of the windings.
- FIG. 13B is a cross-sectional view of a two-winding pickup coil sensor as depicted in FIG. 4 taken along the section 2 - 2 of FIG. 8 .
- FIG. 9 for conventions regarding the depiction of the windings.
- FIG. 14A is a cross-sectional view of a two-winding pickup coil sensor as depicted in FIG. 5 taken along the section 1 - 1 of FIG. 8 .
- FIG. 9 for conventions regarding the depiction of the windings.
- FIG. 14B is a cross-sectional view of a two-winding pickup coil sensor as depicted in FIG. 5 taken along the section 2 - 2 of FIG. 8 .
- FIG. 9 for conventions regarding the depiction of the windings.
- FIG. 15A is a cross-sectional view of a two-winding pickup coil sensor as depicted in FIG. 6 taken along the section 1 - 1 of FIG. 8 .
- FIG. 9 for conventions regarding the depiction of the windings.
- FIG. 15B is a cross-sectional view of a two-winding pickup coil sensor as depicted in FIG. 6 taken along the section 2 - 2 of FIG. 8 .
- FIG. 9 for conventions regarding the depiction of the windings.
- FIG. 16 is a perspective view of a general form of a two-coil pickup coil sensor comprising two bobbins ( 106 a and 106 b ), and two coils ( 107 a and 107 b ).
- FIG. 17 is an overlay of frequency response profiles for pickup coil sensors as depicted in FIG. 10A-10B comprising windings of ⁇ 2,500 turns 1701 and ⁇ 5,000 turns 1702 of 42 AWG enameled copper wire and a pickup coil sensor as depicted in FIG. 11A-11B comprising primary and secondary windings each of ⁇ 2,500 turns of 42 AWG enameled copper wire in which said windings are connected in series 1703 or in parallel 1704 .
- FIG. 18 is an overlay of frequency response profiles for a pickup sensor coil as depicted in FIG. 10A-10B comprising a winding of ⁇ 5,000 turns 1801 of 42 AWG enameled copper wire, a pickup sensor coil as depicted in FIG. 11A-11B comprising primary and secondary windings each of ⁇ 2,500 turns of 42 AWG enameled copper wire in which the windings are connected in series 1802 , and a two-coil pickup coil sensor as depicted in FIG. 16 comprising the pickup sensor coils represented by frequency response curves 1801 and 1802 in which the pickup coil sensors are connected in series 1803 .
- a first embodiment is shown schematically in FIG. 2 and depicted in cross-sectional views in FIG. 11A-11B .
- This embodiment comprises a primary winding 202 and a secondary winding 203 in which said primary and secondary windings are concurrently wound and fully interpenetrating and in which said primary and secondary windings are of the same or different gauge, with or without one or more ferromagnetic pole pieces, magnets, or other material in the core region.
- FIG. 3 A second embodiment is shown schematically in FIG. 3 and depicted in cross-sectional views in FIG. 12A-12B .
- This embodiment comprises a primary winding 302 and a secondary winding 303 in which said primary and secondary windings are concurrently wound and partially interpenetrating and in which the region of interpenetration begins at the start of the windings and ends in the midst of the primary winding 302 and in which said primary and secondary windings are of the same or different gauge, with or without one or more ferromagnetic pole pieces, magnets, or other material in the core region.
- a third embodiment is shown schematically in FIG. 4 and depicted in cross-sectional views in FIG. 13A-13B .
- This embodiment comprises a primary winding 402 and a secondary winding 403 in which said primary and secondary windings are concurrently wound and partially interpenetrating and in which the region of interpenetration begins in the midst of the primary winding 402 and continues to the end of the windings and in which said primary and secondary windings are of the same or different gauge, with or without one or more ferromagnetic pole pieces, magnets, or other material in the core region.
- a fourth embodiment is shown schematically in FIG. 5 and depicted in cross-sectional views in FIG. 14A-14B .
- This embodiment comprises a primary winding 502 and a secondary winding 503 in which said primary and secondary windings are concurrently wound and partially interpenetrating and in which the region of interpenetration begins and ends in the midst of the primary winding 502 and in which said primary and secondary windings are of the same or different gauge, with or without one or more ferromagnetic pole pieces, magnets, or other material in the core region.
- a fifth embodiment is shown schematically in FIG. 6 and depicted in cross-sectional views in FIG. 15A-15B .
- This embodiment comprises a primary winding 602 and a secondary winding 603 in which said primary and secondary windings are concurrently wound and partially interpenetrating and in which the region of interpenetration begins in the midst of the primary winding 602 and ends in the midst of the secondary winding 603 and in which said primary and secondary windings are of the same or different gauge, with or without one or more ferromagnetic pole pieces, magnets, or other material in the core region.
- An additional set of five embodiments is illustrated by combination of one single-winding pickup coil sensor (as shown schematically in FIG. 1 and depicted in cross-sectional views in FIG. 10A-10B ) and another coil of the type of one of the first to fifth embodiments described hereinabove to form a two-coil electromagnetic pickup of either a side-by-side or stacked configuration.
- An additional set of twenty-five embodiments is illustrated by the various possible combinations of one coil of the type of one of the first to fifth embodiments described hereinabove and another coil of the type of one of the first to fifth embodiments described hereinabove to form a two-coil electromagnetic pickup of either a side-by-side or stacked configuration.
- Embodiments described herein above comprise concurrently wound and interpenetrating coils employing two windings. However, it is apparent that concurrently wound coils comprising three or more interpenetrating windings will have additional utility in creating desirable frequency response characteristics.
- Embodiments described herein above comprise one or two coils. However, the usefulness of embodiments in the form of pickup coil sensors with three or more coils variously connected (or not connected) in the manners described herein above is apparent.
- coils that serves as a sensor can be employed as a transmitter.
- coils comprising a plurality of concurrently wound and fully or partially interpenetrating windings as described herein with their attendant characteristics have equally useful embodiments as transmitting coils.
- Such coils are suitable for transmission and reception of wireless signals for digital signals (such as wireless internet connections and communication between peripheral devices such as printers and cameras) and analogue signals (such as sound for wireless speakers, radio, or cochlear implants), field generation or sensing for magnetic resonance imaging, and for power transmission (such as in transformers or wireless chargers for cellular telephones and other rechargeable devices).
Abstract
Coils for receiving or transmitting electromagnetic signals comprising a plurality of concurrently wound and fully or partially interpenetrating windings for which the resonance frequency can be varied over a broad range. The presently described embodiments provide for electromagnetic pickups for stringed musical instruments; however, it is appreciated that other embodiments providing for a wide variety of devices comprising pickup coil sensors are apparent. It is also apparent that a wide variety of devices are possible in which coils with concurrently wound and interpenetrating windings will serve as transmitting coils.
Description
The frequency response of a pickup coil sensor in an electromagnetic pickup (also known as an induction coil sensor, induction sensor, search coil sensor, pickup coil sensor, or magnetic loop sensor), especially its resonance frequency, is an important determinant of the timbre of amplified sound transferred from vibrating ferromagnetic strings. The resonance frequency is largely a function of the internal resistance, inductance, and self-capacitance of the coil. These properties depend upon the geometry of the coil, the number and density of turns in the winding, and gauge of wire. Heretofore, electromagnetic pickups for stringed musical instruments have comprised one or more coils, each of which is wound with a single strand of wire (referred to as a single-winding coil). The resonance frequency of an electromagnetic guitar pickup, for example, typically lies within the range of 4,000 to greater than 20,000 Hertz. However, the fundamental frequencies of notes on the guitar fret board range from ˜80 Hertz (open sixth string E) to ˜1318 Hertz (first string E at the 24th fret), and the frequencies of the corresponding musically important overtones are mostly less than 4,000 Hertz.
Electromagnetic pickups referred to commonly as ‘single coil’ as disclosed in U.S. Pat. No. 2,087,106 (HART) Jun. 13, 1937 and U.S. Pat. No. 2,089,171 (BEAUCHAMP) Aug. 10, 1937 comprise a single-winding coil (as shown schematically in FIG. 1 and depicted in cross-sectional views in FIG. 10A-10B ) in which the winding is disposed about one or more ferromagnetic or permanent magnet pole pieces. Electromagnetic pickups comprising two or more coils (as disclosed in U.S. Pat. No. 2,892,371 (BUTTS) Jun. 30, 1959 and U.S. Pat. No. 2,896,491 (LOVER) Jul. 28, 1959) employ several single-winding coils disposed side-by-side and electrically connected in series or in parallel, often with their magnetic field vectors arranged anti-parallel in order to provide at least partial cancellation of unwanted signal due to external electromagnetic transmissions and main power alternating current. Variations of the two-coil electromagnetic pickup in which one of the single-winding coils is wound with a different gauge of wire (as disclosed in U.S. Pat. No. 4,501,185 (BLUCHER) Feb. 26, 1985) or wound with significantly more turns of wire (commonly referred to as ‘unbalanced’ or ‘ mismatched’ coils) provide for altered timbre of amplified sound due to the coils having different resonance frequencies. Other embodiments of two-coil electromagnetic pickups comprise several single-winding coils that are stacked one atop another (as disclosed in U.S. Pat. No. 3,657,461 (FREEMAN) Apr. 18, 1972) or nested within each other (as disclosed in U.S. Pat. No. 3,711,619 (JONES) Jan. 16, 1973).
Present embodiments provide for the construction of pickup coil sensors comprising a plurality of concurrently wound and fully or partially interpenetrating windings for which the resonance frequency can be varied over a broad range and can be adjusted to emphasize certain frequency regimes. I have found that 1) such coils, whether each winding is used individually or they are connected in series or in parallel, have resonance frequencies that are appreciably different from single-winding pickup coil sensors with the same or similar geometry and similar total number of turns in the winding, and 2) that the frequency response characteristics of such coils can be adjusted by altering the number of turns in each winding, the degree of interpenetration of the windings, and the region within the coil where the interpenetration occurs. In FIG. 17 the frequency response profile for an example of this type of pickup coil sensor is shown for the case in which primary and secondary windings each of ˜2,500 turns of 42 AWG wire are concurrently wound and fully interpenetrating (as shown schematically in FIG. 2 and depicted in cross-sectional views in FIG. 11A-11B ) and electrically connected in series 1703 or in parallel 1704. When the primary and secondary windings are connected in parallel a resonance frequency at ˜19,322 Hertz is observed. When the primary and secondary windings are connected in series a resonance frequency at ˜1,363 Hertz is observed. The frequency response profiles for two single-winding pickup coil sensors (as shown schematically in FIG. 1 and depicted in cross-sectional views in FIG. 10A-10B ) 1701 with ˜2,500 turns of 42 AWG wire (resonance frequency at ˜17,804 Hertz) and 1702 with ˜5,000 turns of 42 AWG wire (resonance frequency at ˜9,907 Hertz) are also shown in FIG. 17 . A pickup coil sensor with concurrently wound and interpenetrating windings can be combined with another such pickup coil sensor or with a single-winding pickup coil sensor to form a two-coil combination with a distinct frequency response profile. In FIG. 18 the frequency response profile for this type of two-coil combination 1803 is shown in which a pickup coil sensor (as shown schematically in FIG. 2 and depicted in cross-sectional views in FIG. 11A-11B ) comprising primary and secondary windings each of ˜2,500 turns of 42 AWG wire and in which said windings are connected in series is in turn connected in series with a single-winding pickup coil sensor (as shown schematically in FIG. 1 and depicted in cross-sectional views in FIG. 10A-10B ) with ˜5,000 turns of 42 AWG wire. The frequency response profiles for the single-winding pickup coil sensor 1801 and the two wire concurrently wound and interpenetrating pickup coil sensor 1802 comprised by the two-coil combination are also shown in FIG. 18 .
The embodiments comprise:
- 1. A plurality of wires
- 2. of the same or different gauge
- 3. that are wound concurrently (in right-handed or left-handed fashion),
- 4. with or without one or more ferromagnetic pole pieces, magnets, or other material in the core region,
- 5. with the same or different number of turns,
- 6. to form fully or partially interpenetrating windings
- 7. that can be connected in series,
- 8. in parallel,
- 9. in phase or out of phase, or
- 10. connected independently in a circuit or circuits, or
- 11. not connected in a circuit.
The following is a tabulation of some prior art that presently appears relevant:
TABLE 1 |
Relevant Prior Art |
Pat. No. | Issue Date | Patentee | ||
8,519,251 | August 2013 | Lingel | ||
7,288,713 | October 2007 | Krozack, et al. | ||
7,189,916 | March 2007 | Kinman | ||
7,022,909 | April 2007 | Kinman | ||
6,846,981 | January 2005 | Devers | ||
4,545,278 | October 2005 | Gagon, et al. | ||
4,501,185 | Feburary 1985 | Blucher | ||
3,983,778 | October 1976 | Bartolini | ||
3,715,446 | Feburary 1973 | Kosinski | ||
3,711,619 | January 1973 | Jones, et al. | ||
3,657,461 | April 1972 | Freeman | ||
3,629,483 | December 1971 | Welch | ||
3,588,311 | June 1971 | Zoller | ||
3,571,483 | March 1971 | Davidson | ||
3,541,219 | November 1970 | Abair | ||
3,535,968 | October 1970 | Rickard | ||
3,483,303 | December 1969 | Warner | ||
3,249,677 | May 1966 | Burns, et al. | ||
3,236,930 | Feburary 1966 | Fender | ||
3,177,283 | April 1965 | Fender | ||
3,147,332 | September 1964 | Fender | ||
3,066,567 | December 1962 | Kelley | ||
2,911,871 | November 1959 | Schultz | ||
2,909,092 | October 1959 | De Armond, et al. | ||
2,896,491 | July 1959 | Lover | ||
2,892,371 | June 1959 | Butts | ||
2,683,388 | July 1954 | Keller | ||
2,612,072 | September 1952 | De Armond | ||
2,557,754 | June 1951 | Morrison | ||
2,294,861 | September 1942 | Fuller | ||
2,293,372 | August 1942 | Vasilach | ||
2,262,335 | November 1941 | Russell | ||
2,089,171 | August 1937 | Beauchamp | ||
2,087,106 | July 1937 | Hart | ||
The foregoing and other objects, features, and advantages will become apparent from the following description of present embodiments in conjunction with the accompanying drawings, of which there are four sheets, in which:
A first embodiment is shown schematically in FIG. 2 and depicted in cross-sectional views in FIG. 11A-11B . This embodiment comprises a primary winding 202 and a secondary winding 203 in which said primary and secondary windings are concurrently wound and fully interpenetrating and in which said primary and secondary windings are of the same or different gauge, with or without one or more ferromagnetic pole pieces, magnets, or other material in the core region.
A second embodiment is shown schematically in FIG. 3 and depicted in cross-sectional views in FIG. 12A-12B . This embodiment comprises a primary winding 302 and a secondary winding 303 in which said primary and secondary windings are concurrently wound and partially interpenetrating and in which the region of interpenetration begins at the start of the windings and ends in the midst of the primary winding 302 and in which said primary and secondary windings are of the same or different gauge, with or without one or more ferromagnetic pole pieces, magnets, or other material in the core region.
A third embodiment is shown schematically in FIG. 4 and depicted in cross-sectional views in FIG. 13A-13B . This embodiment comprises a primary winding 402 and a secondary winding 403 in which said primary and secondary windings are concurrently wound and partially interpenetrating and in which the region of interpenetration begins in the midst of the primary winding 402 and continues to the end of the windings and in which said primary and secondary windings are of the same or different gauge, with or without one or more ferromagnetic pole pieces, magnets, or other material in the core region.
A fourth embodiment is shown schematically in FIG. 5 and depicted in cross-sectional views in FIG. 14A-14B . This embodiment comprises a primary winding 502 and a secondary winding 503 in which said primary and secondary windings are concurrently wound and partially interpenetrating and in which the region of interpenetration begins and ends in the midst of the primary winding 502 and in which said primary and secondary windings are of the same or different gauge, with or without one or more ferromagnetic pole pieces, magnets, or other material in the core region.
A fifth embodiment is shown schematically in FIG. 6 and depicted in cross-sectional views in FIG. 15A-15B . This embodiment comprises a primary winding 602 and a secondary winding 603 in which said primary and secondary windings are concurrently wound and partially interpenetrating and in which the region of interpenetration begins in the midst of the primary winding 602 and ends in the midst of the secondary winding 603 and in which said primary and secondary windings are of the same or different gauge, with or without one or more ferromagnetic pole pieces, magnets, or other material in the core region.
An additional set of five embodiments is illustrated by combination of one single-winding pickup coil sensor (as shown schematically in FIG. 1 and depicted in cross-sectional views in FIG. 10A-10B ) and another coil of the type of one of the first to fifth embodiments described hereinabove to form a two-coil electromagnetic pickup of either a side-by-side or stacked configuration.
An additional set of twenty-five embodiments is illustrated by the various possible combinations of one coil of the type of one of the first to fifth embodiments described hereinabove and another coil of the type of one of the first to fifth embodiments described hereinabove to form a two-coil electromagnetic pickup of either a side-by-side or stacked configuration.
Embodiments described herein above comprise concurrently wound and interpenetrating coils employing two windings. However, it is apparent that concurrently wound coils comprising three or more interpenetrating windings will have additional utility in creating desirable frequency response characteristics.
Embodiments described herein above comprise one or two coils. However, the usefulness of embodiments in the form of pickup coil sensors with three or more coils variously connected (or not connected) in the manners described herein above is apparent.
It is generally known that a coil that serves as a sensor can be employed as a transmitter. Thus coils comprising a plurality of concurrently wound and fully or partially interpenetrating windings as described herein with their attendant characteristics have equally useful embodiments as transmitting coils. Such coils are suitable for transmission and reception of wireless signals for digital signals (such as wireless internet connections and communication between peripheral devices such as printers and cameras) and analogue signals (such as sound for wireless speakers, radio, or cochlear implants), field generation or sensing for magnetic resonance imaging, and for power transmission (such as in transformers or wireless chargers for cellular telephones and other rechargeable devices).
It is understood that variations and modifications can be effected within the scope and spirit of the embodiments described hereinabove and as defined in the appended claims and their legal equivalents.
- Slawomir Tumanski, “Induction Coil sensors—a review,” Measurement Science and Technology 18 (2007) R31-R46
- Christophe Coillot and Paul Leroy (2012). Induction Magnetometers Principle, Modeling and Ways of Improvement, Magnetic Sensors—Principles and Applications, Dr Kevin Kuang (Ed.), ISBN: 978-953-51-0232-8
Claims (19)
1. A pickup coil sensor comprising:
a plurality of windings comprising partially and secondary windings wound concurrently to form a region of partially interpenetrating windings; and
the region of the partially interpenetrating windings beginning in the midst of the primary windings.
2. A sensor as in claim 1 wherein the primary and secondary windings are of the same gauge.
3. A sensor as in claim 1 wherein the primary and secondary windings are of different gauges.
4. A sensor as in claim 1 , wherein the individual windings of the primary and secondary windings have a different number of turns.
5. A sensor as in claim 1 wherein the region of the partially interpenetrating windings terminates at one end of the plurality of the windings.
6. A sensor as in claim 1 wherein the region of the partially interpenetrating windings terminates in the midst of the primary windings.
7. A sensor as in claim 1 wherein the region of the partially interpenetrating windings terminates in the midst of the secondary windings.
8. A pickup coil sensor comprising:
a core;
a primary winding at least partially surrounding the core;
a secondary winding at least partially surrounding the core; and
a region comprising the primary and secondary windings being at least partially interpenetrating, at least one of a beginning and an ending of the region being in the midst of one of the primary and secondary windings.
9. The sensor of claim 8 wherein the region begins at the start of the primary and secondary windings.
10. The sensor of claim 8 wherein the region begins in the midst of the primary winding.
11. The sensor of claim 8 wherein the region ends in the midst of the secondary winding.
12. The sensor of claim 8 wherein the region ends in the midst of the primary winding.
13. The sensor of claim 8 wherein the region begins and ends in the midst of the primary winding.
14. The sensor of claim 8 wherein the region begins at the start of the primary and secondary windings and ends in the midst of the primary winding.
15. The sensor of claim 8 wherein the region begins in the midst of the primary winding and ends at the end of the primary and secondary windings.
16. The sensor of claim 8 wherein the region begins in the midst of the primary winding and ends in the midst of the secondary winding.
17. A method for adjusting the frequency response characteristics of a pickup coil sensor, the method comprising:
providing a pickup coil sensor comprising primary and second windings that establish a region of at least partially interpenetrating;
adjusting the frequency response characteristics of the pickup coil sensor by performing at least one of the following:
altering the number of turns in each of the primary and secondary windings;
altering the degree of interpenetration in the region; and
altering the position where the region of the interpenetration occurs in the pickup coil sensor.
18. The method of claim 17 wherein the adjusting comprises altering the degree of interpenetration in the region.
19. The method of claim 17 wherein the adjusting comprises altering the position where the region of the interpenetration occurs in the pickup coil sensor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/002,400 US9837063B1 (en) | 2016-01-21 | 2016-01-21 | Pickup coil sensors and methods for adjusting frequency response characteristics of pickup coil sensors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/002,400 US9837063B1 (en) | 2016-01-21 | 2016-01-21 | Pickup coil sensors and methods for adjusting frequency response characteristics of pickup coil sensors |
Publications (1)
Publication Number | Publication Date |
---|---|
US9837063B1 true US9837063B1 (en) | 2017-12-05 |
Family
ID=60452101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/002,400 Active US9837063B1 (en) | 2016-01-21 | 2016-01-21 | Pickup coil sensors and methods for adjusting frequency response characteristics of pickup coil sensors |
Country Status (1)
Country | Link |
---|---|
US (1) | US9837063B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10446130B1 (en) * | 2018-08-08 | 2019-10-15 | Fender Musical Instruments Corporation | Stringed instrument pickup with multiple coils |
US10720133B2 (en) | 2018-08-14 | 2020-07-21 | Fender Musical Instruments Corporation | Multiple coil pickup system |
Citations (54)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2087106A (en) | 1936-02-08 | 1937-07-13 | Gibson Inc | Electrical musical instrument |
US2089171A (en) | 1934-06-02 | 1937-08-10 | Electro String Instr Corp | Electrical stringed musical instrument |
US2262335A (en) | 1939-07-21 | 1941-11-11 | Clarence W Russell | Musical instrument |
US2293372A (en) | 1938-08-10 | 1942-08-18 | Picart Lebas Telephones | Means for amplifying mechanical vibrations |
US2294861A (en) | 1940-08-14 | 1942-09-01 | Gibson Inc | Electrical pickup for stringed musical instruments |
US2455046A (en) | 1946-03-20 | 1948-11-30 | Rowe Ind | Guitar magnetic microphone |
US2557754A (en) | 1949-07-12 | 1951-06-19 | Robert Miekley | Magnetic pickup unit for guitars |
US2612072A (en) | 1950-05-10 | 1952-09-30 | Rowe Ind | Individual magnet adjustable pickup |
US2683388A (en) | 1952-04-12 | 1954-07-13 | Valco Mfg Co | Pickup device for stringed instruments |
US2892371A (en) | 1957-01-22 | 1959-06-30 | Butts Joseph Raymond | Pickup |
US2896491A (en) | 1955-06-22 | 1959-07-28 | Gibson Inc | Magnetic pickup for stringed musical instrument |
US2909092A (en) | 1956-11-19 | 1959-10-20 | Rowe Ind | Electrical pickups for musical instruments |
US2911871A (en) | 1954-09-14 | 1959-11-10 | Charles F Schultz | Magnetic pick-up device |
US2964985A (en) | 1956-12-12 | 1960-12-20 | Fred Gretsch Mfg Co | Sound pick up device for stringed instruments |
US3066567A (en) | 1960-02-10 | 1962-12-04 | Jr Joseph J Kelley | Magnetic pick-up for steel string instruments |
US3147332A (en) | 1961-08-21 | 1964-09-01 | Clarence L Fender | Electric guitar incorporating pickup means adapted to minimize beating effects |
US3177283A (en) | 1961-08-21 | 1965-04-06 | Clarence L Fender | Electric guitar incorporating separate pickups for the wound and unwound strings |
US3236930A (en) | 1962-05-11 | 1966-02-22 | Columbia Records Distrib Corp | Electromagnetic pickup for electrical musical instruments |
US3249677A (en) | 1961-10-20 | 1966-05-03 | Ormston Burns Ltd | Pick-ups for guitars and coupling circuits therefor |
US3483303A (en) | 1965-07-29 | 1969-12-09 | Lorenzo A Warner | Elongated pickup for metal stringed musical instruments having ferromagnetic shielding |
US3535968A (en) | 1969-04-14 | 1970-10-27 | Kaman Corp | Adjustable electromagnetic pick-up for stringed musical instruments |
US3541219A (en) | 1968-10-15 | 1970-11-17 | Rowe Ind Inc | Magnetic pickup unit for musical instruments |
US3544696A (en) | 1969-09-29 | 1970-12-01 | Paul Daniel Broussard | Plural electromagnetic pickup system for stringed musical instrument with tone and volume controls |
US3571483A (en) | 1970-02-02 | 1971-03-16 | Hammond Corp | Variable reluctance guitar pickup system |
US3588311A (en) | 1969-01-16 | 1971-06-28 | Attila C Zoller | Bi-directional electromagnetic pick-up device for stringed musical instruments |
US3629483A (en) | 1968-11-21 | 1971-12-21 | Ruel E Welch | Multivocal music system |
US3657461A (en) | 1970-12-21 | 1972-04-18 | Quilla H Freeman | Single pickup frequency control for stringed instrument |
US3711619A (en) | 1970-11-04 | 1973-01-16 | R Jones | Natural performance extended range pick-up device |
US3715446A (en) | 1971-06-22 | 1973-02-06 | Gulf & Western Industries | Magnetic pickup for stringed musical instruments |
US3983778A (en) | 1974-08-21 | 1976-10-05 | William Bartolini | High asymmetry variable reluctance pickup system for steel string musical instruments |
US4372186A (en) * | 1981-02-17 | 1983-02-08 | Aaroe Kenneth T | Humbucking electromagnetic pickup for stringed musical instruments |
US4501185A (en) | 1983-07-29 | 1985-02-26 | Dimarzio Musical Instrument Pickups | Transducer for stringer musical instrument |
US4545278A (en) | 1983-04-06 | 1985-10-08 | Fender Musical Instruments Corporation | Apparatus and method for adjusting the characteristic sounds of electric guitars, and for controlling tones |
US5376754A (en) * | 1993-01-12 | 1994-12-27 | Gibson Guitar Corp. | Pickup apparatus, having a winding with an adjacent closed circuit, for stringed musical instruments |
US5408043A (en) * | 1990-10-10 | 1995-04-18 | Thomas E. Dorn | Electromagnetic musical pickups with central permanent magnets |
US20020020281A1 (en) * | 1999-05-17 | 2002-02-21 | Devers David George | Electromagnetic humbucker pick-up for stringed musical instruments |
US20020073829A1 (en) * | 2000-12-14 | 2002-06-20 | Giovanni Gaglio | Magnetic pick-up device for stringed musical instrument |
US20020073830A1 (en) * | 2000-09-18 | 2002-06-20 | Petherick John Elliot | Balanced pickup for stringed instruments |
US20020083819A1 (en) | 1999-01-19 | 2002-07-04 | Kinman Christopher Ian | Noise sensing bobbin-coil assembly for amplified stringed musical instrument pickups |
US20050150364A1 (en) | 2004-01-12 | 2005-07-14 | Paul Reed Smith Guitars, Limited Partnership | Multi-mode multi-coil pickup and pickup system for stringed musical instruments |
US20050150365A1 (en) | 2004-01-14 | 2005-07-14 | Paul Reed Smith Guitars, Limited Partnership | Bobbin and pickup for stringed musical instruments |
USD517114S1 (en) | 2004-01-14 | 2006-03-14 | Paul Reed Smith Guitars Lp | Electric guitar |
US7612282B1 (en) * | 2007-04-16 | 2009-11-03 | Andrew Scott Lawing | Musical instrument pickup |
US20100122623A1 (en) * | 2008-10-17 | 2010-05-20 | Salo Jarno Johannes | Electromagnetic pickup for stringed musical instrument, and an electric guitar |
US7989690B1 (en) * | 2007-04-16 | 2011-08-02 | Andrew Scott Lawing | Musical instrument pickup systems |
US20120103170A1 (en) * | 2010-10-27 | 2012-05-03 | Christopher Kinman | Magnetic flux concentrator for increasing the efficiency of an electromagnetic pickup |
US20120118129A1 (en) * | 2010-11-16 | 2012-05-17 | Changsoo Jang | Electromagnetic pickup with multiple wire coils wound around individual pole sets to attain multiple tones |
US8319088B1 (en) * | 2010-10-18 | 2012-11-27 | Nessy Harari | Poly-coil matrix |
US8519251B2 (en) | 2010-10-29 | 2013-08-27 | Anaren, Inc. | Magnetic instrument pickup |
US20130239788A1 (en) * | 2012-03-19 | 2013-09-19 | Gibson Guitar Corp. | Single Coil Parallel Tapped Magnetic Pickup |
US20130312591A1 (en) * | 2010-10-28 | 2013-11-28 | Gibson Guitar Corp. | Variable Resonant Bifilar Single Coil Magnetic Pickup |
US20130327202A1 (en) * | 2010-10-28 | 2013-12-12 | Gibson Guitar Corp. | Low Impedance Dual Coil Bifilar Magnetic Pickup |
US20140373701A1 (en) * | 2013-06-20 | 2014-12-25 | Gil Yaron | Electromagnetic transducer for stringed instrument |
US9704464B1 (en) * | 2015-03-24 | 2017-07-11 | Gtr Novo Llc | Apparatus for enhancing output of a stringed musical instrument |
-
2016
- 2016-01-21 US US15/002,400 patent/US9837063B1/en active Active
Patent Citations (63)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2089171A (en) | 1934-06-02 | 1937-08-10 | Electro String Instr Corp | Electrical stringed musical instrument |
US2087106A (en) | 1936-02-08 | 1937-07-13 | Gibson Inc | Electrical musical instrument |
US2293372A (en) | 1938-08-10 | 1942-08-18 | Picart Lebas Telephones | Means for amplifying mechanical vibrations |
US2262335A (en) | 1939-07-21 | 1941-11-11 | Clarence W Russell | Musical instrument |
US2294861A (en) | 1940-08-14 | 1942-09-01 | Gibson Inc | Electrical pickup for stringed musical instruments |
US2455046A (en) | 1946-03-20 | 1948-11-30 | Rowe Ind | Guitar magnetic microphone |
US2557754A (en) | 1949-07-12 | 1951-06-19 | Robert Miekley | Magnetic pickup unit for guitars |
US2612072A (en) | 1950-05-10 | 1952-09-30 | Rowe Ind | Individual magnet adjustable pickup |
US2683388A (en) | 1952-04-12 | 1954-07-13 | Valco Mfg Co | Pickup device for stringed instruments |
US2911871A (en) | 1954-09-14 | 1959-11-10 | Charles F Schultz | Magnetic pick-up device |
US2896491A (en) | 1955-06-22 | 1959-07-28 | Gibson Inc | Magnetic pickup for stringed musical instrument |
US2909092A (en) | 1956-11-19 | 1959-10-20 | Rowe Ind | Electrical pickups for musical instruments |
US2964985A (en) | 1956-12-12 | 1960-12-20 | Fred Gretsch Mfg Co | Sound pick up device for stringed instruments |
US2892371A (en) | 1957-01-22 | 1959-06-30 | Butts Joseph Raymond | Pickup |
US3066567A (en) | 1960-02-10 | 1962-12-04 | Jr Joseph J Kelley | Magnetic pick-up for steel string instruments |
US3147332A (en) | 1961-08-21 | 1964-09-01 | Clarence L Fender | Electric guitar incorporating pickup means adapted to minimize beating effects |
US3177283A (en) | 1961-08-21 | 1965-04-06 | Clarence L Fender | Electric guitar incorporating separate pickups for the wound and unwound strings |
US3249677A (en) | 1961-10-20 | 1966-05-03 | Ormston Burns Ltd | Pick-ups for guitars and coupling circuits therefor |
US3236930A (en) | 1962-05-11 | 1966-02-22 | Columbia Records Distrib Corp | Electromagnetic pickup for electrical musical instruments |
US3483303A (en) | 1965-07-29 | 1969-12-09 | Lorenzo A Warner | Elongated pickup for metal stringed musical instruments having ferromagnetic shielding |
US3541219A (en) | 1968-10-15 | 1970-11-17 | Rowe Ind Inc | Magnetic pickup unit for musical instruments |
US3629483A (en) | 1968-11-21 | 1971-12-21 | Ruel E Welch | Multivocal music system |
US3588311A (en) | 1969-01-16 | 1971-06-28 | Attila C Zoller | Bi-directional electromagnetic pick-up device for stringed musical instruments |
US3535968A (en) | 1969-04-14 | 1970-10-27 | Kaman Corp | Adjustable electromagnetic pick-up for stringed musical instruments |
US3544696A (en) | 1969-09-29 | 1970-12-01 | Paul Daniel Broussard | Plural electromagnetic pickup system for stringed musical instrument with tone and volume controls |
US3571483A (en) | 1970-02-02 | 1971-03-16 | Hammond Corp | Variable reluctance guitar pickup system |
US3711619A (en) | 1970-11-04 | 1973-01-16 | R Jones | Natural performance extended range pick-up device |
US3657461A (en) | 1970-12-21 | 1972-04-18 | Quilla H Freeman | Single pickup frequency control for stringed instrument |
US3715446A (en) | 1971-06-22 | 1973-02-06 | Gulf & Western Industries | Magnetic pickup for stringed musical instruments |
US3983778A (en) | 1974-08-21 | 1976-10-05 | William Bartolini | High asymmetry variable reluctance pickup system for steel string musical instruments |
US4372186A (en) * | 1981-02-17 | 1983-02-08 | Aaroe Kenneth T | Humbucking electromagnetic pickup for stringed musical instruments |
US4545278A (en) | 1983-04-06 | 1985-10-08 | Fender Musical Instruments Corporation | Apparatus and method for adjusting the characteristic sounds of electric guitars, and for controlling tones |
US4501185A (en) | 1983-07-29 | 1985-02-26 | Dimarzio Musical Instrument Pickups | Transducer for stringer musical instrument |
US5408043A (en) * | 1990-10-10 | 1995-04-18 | Thomas E. Dorn | Electromagnetic musical pickups with central permanent magnets |
US5376754A (en) * | 1993-01-12 | 1994-12-27 | Gibson Guitar Corp. | Pickup apparatus, having a winding with an adjacent closed circuit, for stringed musical instruments |
US20060112816A1 (en) | 1999-01-19 | 2006-06-01 | Kinman Christopher I | Noise sensing bobbin-coil assembly for amplified stringed musical instrument pickups |
US7022909B2 (en) | 1999-01-19 | 2006-04-04 | Christopher Ian Kinman | Noise sensing bobbin-coil assembly for amplified stringed musical instrument pickups |
US7189916B2 (en) | 1999-01-19 | 2007-03-13 | Christopher Ian Kinman | Noise sensing bobbin-coil assembly for amplified stringed musical instrument pickups |
US20020083819A1 (en) | 1999-01-19 | 2002-07-04 | Kinman Christopher Ian | Noise sensing bobbin-coil assembly for amplified stringed musical instrument pickups |
US6846981B2 (en) | 1999-05-17 | 2005-01-25 | David George Devers | Electromagnetic humbucker pick-up for stringed musical instruments |
US20020020281A1 (en) * | 1999-05-17 | 2002-02-21 | Devers David George | Electromagnetic humbucker pick-up for stringed musical instruments |
US20020073830A1 (en) * | 2000-09-18 | 2002-06-20 | Petherick John Elliot | Balanced pickup for stringed instruments |
US6476309B2 (en) * | 2000-12-14 | 2002-11-05 | Giovanni Gaglio | Magnetic pick-up device for stringed musical instrument |
US20020073829A1 (en) * | 2000-12-14 | 2002-06-20 | Giovanni Gaglio | Magnetic pick-up device for stringed musical instrument |
US20050150364A1 (en) | 2004-01-12 | 2005-07-14 | Paul Reed Smith Guitars, Limited Partnership | Multi-mode multi-coil pickup and pickup system for stringed musical instruments |
US7288713B2 (en) | 2004-01-14 | 2007-10-30 | Paul Reed Smith Guitars, Limited Partnership | Bobbin and pickup for stringed musical instruments |
US20050150365A1 (en) | 2004-01-14 | 2005-07-14 | Paul Reed Smith Guitars, Limited Partnership | Bobbin and pickup for stringed musical instruments |
USD517114S1 (en) | 2004-01-14 | 2006-03-14 | Paul Reed Smith Guitars Lp | Electric guitar |
US7612282B1 (en) * | 2007-04-16 | 2009-11-03 | Andrew Scott Lawing | Musical instrument pickup |
US7989690B1 (en) * | 2007-04-16 | 2011-08-02 | Andrew Scott Lawing | Musical instrument pickup systems |
US20100122623A1 (en) * | 2008-10-17 | 2010-05-20 | Salo Jarno Johannes | Electromagnetic pickup for stringed musical instrument, and an electric guitar |
US8319088B1 (en) * | 2010-10-18 | 2012-11-27 | Nessy Harari | Poly-coil matrix |
US8791351B2 (en) * | 2010-10-27 | 2014-07-29 | Christopher Kinman | Magnetic flux concentrator for increasing the efficiency of an electromagnetic pickup |
US20120103170A1 (en) * | 2010-10-27 | 2012-05-03 | Christopher Kinman | Magnetic flux concentrator for increasing the efficiency of an electromagnetic pickup |
US20130312591A1 (en) * | 2010-10-28 | 2013-11-28 | Gibson Guitar Corp. | Variable Resonant Bifilar Single Coil Magnetic Pickup |
US20130327202A1 (en) * | 2010-10-28 | 2013-12-12 | Gibson Guitar Corp. | Low Impedance Dual Coil Bifilar Magnetic Pickup |
US8802959B2 (en) * | 2010-10-28 | 2014-08-12 | Gibson Brands, Inc. | Variable resonant bifilar single coil magnetic pickup |
US8519251B2 (en) | 2010-10-29 | 2013-08-27 | Anaren, Inc. | Magnetic instrument pickup |
US20120118129A1 (en) * | 2010-11-16 | 2012-05-17 | Changsoo Jang | Electromagnetic pickup with multiple wire coils wound around individual pole sets to attain multiple tones |
US20130239788A1 (en) * | 2012-03-19 | 2013-09-19 | Gibson Guitar Corp. | Single Coil Parallel Tapped Magnetic Pickup |
US20140373701A1 (en) * | 2013-06-20 | 2014-12-25 | Gil Yaron | Electromagnetic transducer for stringed instrument |
US8946537B2 (en) * | 2013-06-20 | 2015-02-03 | Gil Yaron | Electromagnetic transducer for stringed instrument |
US9704464B1 (en) * | 2015-03-24 | 2017-07-11 | Gtr Novo Llc | Apparatus for enhancing output of a stringed musical instrument |
Non-Patent Citations (4)
Title |
---|
Coillot, Christophe, et al., "Induction Magnetometers Principle, Modeling and Ways of Improvement" Magnetic Sensors-Principles and Applications, Dr. Kevin Kuang (Ed.) ISBN: 978-953-51-0232-8, InTech (2012) 21 Pgs. |
Coillot, Christophe, et al., "Induction Magnetometers Principle, Modeling and Ways of Improvement" Magnetic Sensors—Principles and Applications, Dr. Kevin Kuang (Ed.) ISBN: 978-953-51-0232-8, InTech (2012) 21 Pgs. |
Tumanski, S., "Induction Coil Sensors-a Review", Measurement Science and Technology 18 (2007) 14 pgs. |
Tumanski, S., "Induction Coil Sensors—a Review", Measurement Science and Technology 18 (2007) 14 pgs. |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10446130B1 (en) * | 2018-08-08 | 2019-10-15 | Fender Musical Instruments Corporation | Stringed instrument pickup with multiple coils |
US10720133B2 (en) | 2018-08-14 | 2020-07-21 | Fender Musical Instruments Corporation | Multiple coil pickup system |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8853517B1 (en) | Musical instrument pickup incorporating engineered ferromagnetic materials | |
US7994413B2 (en) | Electromagnetic pickup for stringed musical instrument, and an electric guitar | |
US7456722B1 (en) | Programmable microtransformer | |
US9165545B2 (en) | Pickup for stringed instrument | |
US7227076B2 (en) | Advanced magnetic circuit to improve both the solenoidal and magnetic functions of string instrument pickups with co-linear coil assemblies | |
US20120118129A1 (en) | Electromagnetic pickup with multiple wire coils wound around individual pole sets to attain multiple tones | |
US7982123B2 (en) | Passive electromagnetic string isolating pickup | |
AU732394B2 (en) | High inductance electromagnetic pickup for stringed musical instruments | |
US10115383B2 (en) | Humbucking pickup and method of providing permanent magnet extending through opposing coils parallel to string orientation | |
US8309836B1 (en) | Musical instrument pickup | |
US8969701B1 (en) | Musical instrument pickup with field modifier | |
US20100101399A1 (en) | Electromagnetic Pickup for stringed musical instruments | |
US8946537B2 (en) | Electromagnetic transducer for stringed instrument | |
US8344236B2 (en) | Polyphonic guitar pickup | |
US9837063B1 (en) | Pickup coil sensors and methods for adjusting frequency response characteristics of pickup coil sensors | |
JP2010093183A (en) | Balun transformer | |
US6476309B2 (en) | Magnetic pick-up device for stringed musical instrument | |
US11610571B2 (en) | Humbucker pickup for string instruments with interposed tone-altering signal processor | |
US9626948B2 (en) | Systems and methods for a variable aperture electromagnetic pickup for stringed musical instruments | |
US6525258B1 (en) | Electromechanical musical instrument pickup | |
US10037751B2 (en) | Single coil hum-cancelling pickup for musical instruments | |
RU2368960C1 (en) | Electromagnet pickup | |
JP2007288741A (en) | Loose coupling coil | |
US10984774B2 (en) | Hum-cancelling system | |
KR20090088179A (en) | Method of making 2-step ct |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, MICRO ENTITY (ORIGINAL EVENT CODE: M3551); ENTITY STATUS OF PATENT OWNER: MICROENTITY Year of fee payment: 4 |